According to what you mentioned already, the first and foremost step is to own a wallet probably a mixture of hot and cold wallets and know how to buy your preferred coins to trade with and how to withdraw, transfer or deposit your funds.
Then, that's when the YouTube videos would do well to teach all other things like how to set up a trading account on any decentralized exchange and then the safest or easiest technique to trade as a newbie until you get to a professional stage where other techniques are exposed with experience and more acquisition of knowledge.
Learning about own a wallet will not too difficult as long as they wants to learns from many sources. They don't have to buy a hardware wallets if they don't have much money. They can use their Android phone to install the wallet and learns more about that. He can learns from many videos available on Youtube and that will no needs to long to understand about how to use the wallets. He can moves to the next lessons which is how to have an account on the exchanges and he can learns that from Youtube. The key here is we wants to learn more and more than other people so we can have many information that will useful for us and knows how to do.
It seems like he still doesn't have any basic knowledge about bitcoin and the market . So I think he should take the time to learn what bitcoin is, what cryptocurrency is, basic concepts like decentralization , non custodial wallets , centralized exchanges...he shouldn't rush to buy bitcoin or into trading without basic knowledge. If he buys bitcoin now or rushes into trading, it will only make him lose money faster without bringing him any benefit.
OP, there is a lot of beginner material right on the forum that you can find on your own or can easily be found on YouTube channels . You should learn the basics instead of diving into investing or trading .
I think the same as you and that is why he must spend his time to learns more about crypto so he will know what he needs to do. Someone who can learns many things about crypto will have their experiences improves and he can decides what is better for him although he gets many advices from us. He can also learns from this forum and asks many things to experienced members who can teach him about many things. If he can have a will, he will see that its not takes too long to understand what is crypto and else so he can start to buy Bitcoin like other people.